MD3220i Disks Bypassed after Reboot

I have a Power Vault MD3220i, and after a reboot, all of the drives show up as bypassed, and none of my virtual disks come up. From my googling, I don't see that anyone else has had a similar behavior. I have two different drive part numbers in the enclosure, and the problem is present with both. All drives are Dell certified with a Dell part number. I can bring the drives back online by taking them all out and reinserting one or two at a time, but I have to wait in between inserting drives or they will go right back into bypassed mode. Sometimes a drives will have to be tried in a couple of different slots before it comes online. Right now I have two drives that worked fine an hour ago that only show as bypassed. Any idea what would cause this bizarre behavior?